1084421520 has 480 divisors, whose sum is σ = 4655868672. Its totient is φ = 228427776.

The previous prime is 1084421473. The next prime is 1084421557. The reversal of 1084421520 is 251244801.

It is a super-2 number, since 2×1084421520² = 2351940066078220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1768734 + ... + 1769346.

Almost surely, 2^1084421520 is an apocalyptic number.

1084421520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1084421520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2327934336).

1084421520 is an abundant number, since it is smaller than the sum of its proper divisors (3571447152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1084421520 is a wasteful number, since it uses less digits than its factorization.

1084421520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1084421520 is about 32930.5560232438. The cubic root of 1084421520 is about 1027.3837899367.

The spelling of 1084421520 in words is "one billion, eighty-four million, four hundred twenty-one thousand, five hundred twenty".